3-Mode 160 Lumens Zoom Headlamp-YellowThe 3-Mode 160 Lumens Zoom Headlamp is one of the brightest headlamps available! The latest LED technology combined with the precision zoom lens produces bright white light with clean edges. The LED chip sets new benchmarks for efficiency and you can switch to low mode for even longer battery life. Solid state design is virtually indestructible, since there is no filament to burn out. It has 3 modes: full power, low power, and emergency flashing. Uses 3 AAA batteries (not included!) or or 1 x 18650 Li-ion battery (not included). Used by paramedics and firefighters, plumbers, electricians, homeowners, backpackers and campers...anyone who needs hands free light in the dark. It's light weight and comfortable to wear...Hope it can bring more convenience to your life.